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P0AA6 Toyota Code - Hybrid Battery Voltage System Isolation Fault

- Code Popularity: 46,595 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0AA6 Toyota?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Hybrid battery junction block
  • Faulty Battery Smart Unit
  • Faulty HV Battery
  • Inverter With Converter Assembly
⚠ Does your Toyota have Safety Recalls? → Check here

How to Fix the DTC P0AA6 Toyota?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

Toyota Gen 2 Prius Article Diagnose P0AA6 Code:
Toyota Prius Code P0AA6

There is a Factory Service Bulletin for the 2004–2005 Toyota Prius:
2004–2005 Toyota Prius Factory Service Bulletin OBDII Code P0AA6






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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0AA6 Toyota code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0AA6 Toyota Description

The Power Management Control ECU monitors the Battery Smart Unit. The Diagnostic Trouble Code (DTC) will set when the Power Management Control ECU detects insulation malfunctions in the high-voltage system.

OBDII Code P0AA6 Toyota - Hybrid Battery Voltage System Isolation Fault - AutoCodes.com
P0AA6 Toyota Code - Hybrid Battery Voltage System Isolation Fault

Need More Information on the Code?

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Code P0AA6 Toyota comments

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